"Buckets" as an idiomatic part of speech implying "a lot" or "tons" is older than the internet.
It might be worthwhile to track down where the practice of awarding internets to eachother came from, since that's a piece of information that can be verified. But trying to nail it down as a discrete unit of measurement involves making things up, and that's not something we allow into the Confirmed section.
As for Epic, I think the popular opinion holds that most people overuse the word Epic all too often. Plenty of instances of "Epic Win" declarations seem to be more enthusiastic about using the phrase itself rather than for the act which they are declaring is Epic.
I have a 12 year old niece who I heard say "Epic Fail" about 10 times in a single game of pool. I wouldn't say that every shot that her brother missed was epic. In fact, they were pretty much unremarkable.
Abstract concepts don't often translate well into discrete units.